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In apple orchards, the use of pesticides such as pyrethroids for the control of lepidopteran and dipteran pests can severely disturb natural equilibri...
Read moreA simple but general model of density-dependent dispersal in an arthropod population is used to explain the relationship between the density and the s...
Read moreThe effects of single pre-blossom applications of DDT/ BHC and lead arsenate/nicotine on the fauna of apple trees in an orchard which was otherwise ne...
Read moreThe following is virtually the author's summary of this part of a series on investigations in south-eastern England [cf. RAE A 57 889, etc.]. The effe...
Read moreIn a randomized plot experiment on Festuca arundinacea grassland on alluvial loam soil during 1968, plots were mowed and raked bi-weekly, mowed and sp...
Read moreThe macro-invertebrate faunas of 67 filter-beds in 48 sewage works throughout the UK were surveyed in relation to the physico-chemical characteristics...
Read moreIn a study in an unsprayed cider-apple orchard in Bristol, England, on the importance of egg predation in the population dynamics of Cydia pomonella (...
Read moreTo find a more reliable basis for ecotoxicological risk assessment, two microcosm experiments, one in the laboratory and another in the field (lysimet...
Read moreThe following is based largely on the author's summary of .this part of a series on investigations in south-eastern f-.ngland [cf. RAE A 54 470]. Foll...
Read moreThe rate of deforestation in West Africa was around 2% (12 000 km2) per annum during the 1980s, and recent evidence from Cameroon suggests that the ra...
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